Practice Problem 4-1 Back | Index | Next

Given: A cylindrical concrete column of diameter 3.5 ft. has initial height of 25.0 ft. Assume the density of concrete is 145 lb/ft3 and the elastic modulus in compression is 2.5 Msi.

Req'd: Determine the downward displacement of the top of the column d due to its own weight. (Note: the elongation D of the column should be negative; the downward displacement d positive).

d =  in.  (1%)